404103409 has 2 divisors, whose sum is σ = 404103410. Its totient is φ = 404103408.

The previous prime is 404103397. The next prime is 404103431. The reversal of 404103409 is 904301404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210337009 + 193766400 = 14503^2 + 13920^2 .

It is a cyclic number.

It is not a de Polignac number, because 404103409 - 2⁷ = 404103281 is a prime.

It is not a weakly prime, because it can be changed into another prime (404103499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202051704 + 202051705.

It is an arithmetic number, because the mean of its divisors is an integer number (202051705).

Almost surely, 2^404103409 is an apocalyptic number.

It is an amenable number.

404103409 is a deficient number, since it is larger than the sum of its proper divisors (1).

404103409 is an equidigital number, since it uses as much as digits as its factorization.

404103409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 404103409 is about 20102.3234726735. The cubic root of 404103409 is about 739.3172476647.

The spelling of 404103409 in words is "four hundred four million, one hundred three thousand, four hundred nine".